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MECHANISMS - Coggle Diagram

- - - - The diarneters of the wheels are expressed in units
        of length, normally millimetrer
      - The velocity of the wheels is expressed in revolutions
        per mmute
- - - - Fixed pulleys: a wheel that has a groove for a rope ,chain or bed to go round it.
      - Moveable pulleys: it has two pulleys, its balanced when it fulfis this ecuation F: R/2
      - levers: rigid bar, there are three class
      - Compound pulleys: is a set of fixed and moveable pulleys, often called a block and
        tackle.
  - - - rotary motion
      - linear motion
    - - rotary to linear
      - rotary to reciprocating
- - - - This uses a pinion (a small cogwheel mounted on a rack (atoothed belt or bar).